Cabinet Design And Emc; General Information - Siemens SINAMICS S120 Combi Manual

Cabinet design and EMC

12.1

General information

As built-in units, S120 Combi Power Modules comply with degree of protection IP20 or
IPXXB according to IEC 60529, and open type devices according to UL 50. This therefore
ensures that fingers cannot come into contact with any live parts.
To ensure also protection against mechanical stress and climatic conditions, the components
must always be operated in housings, cabinets or enclosed electrical operating areas/rooms
that fulfill at least degree of protection IP54 according to European enclosure specifications,
or in compliance with US, Canadian and Mexican regulations as enclosure type 12,
according to NEMA 250.
Note
Protection against the spread of fire
The converter may be operated only in closed housings or in higher-level control cabinets
with protective covers that are closed, and when all of the protective devices are used.
Converters of the open type / IPXXB degree of protection must be installed in a metal control
cabinet or protected by another equivalent measure so that fire cannot spread and emissions
cannot escape from the cabinet.
Note
Protection against condensation and electrically conductive contamination
To ensure the functional safety and safety functions of Safety Integrated, protect the
converter, e.g. by installing it in a control cabinet with degree of protection IP54 according to
IEC 60529 or Type 12 according to NEMA 250. Further measures may be necessary for
particularly critical operating conditions.
If condensation and conductive pollution can be excluded at the installation site, a lower
degree of cabinet protection is permissible.
Low-voltage switchgear and controlgear assemblies
If the S120 Combi is used for the electrical equipment of machines, the applicable
requirements of EN 60204-1 must also be adhered to.
Safety of machinery - electrical equipment of machines
All information for device selection in this section applies to
● Operation on TN and TT line supply systems with grounded neutral point and grounded
phase conductor
● Operation on IT line supply systems
SINAMICS S120 Combi
Manual, 11/2017, 6SL3097-4AV00-0BP7
12
273